Kings Norton Solution was used before WW1 to clean the metal fouling out of barrels.

Kings Norton is based on Druggist Ammonia 28% + other

Ammonia compounds.

Used incorrectly,it will hurt your pipes

See Hatchers Note Book !

Regards,

Steve

*****************Yes, my sources (multiple, including NRA data and eyewitnesses who saw the stuff) indicate that the US fought WWI with silver-colored bullets in the then-relatively new .30-06. This was before M2 Ball (most of which had soft iron jackets with gilding metal or copper plating), this was even before M1 Ball.

Trust us, those "harder" jackets will do nothing harmful to your barrel as far as wear goes.

The metal fouling, however, was often described in bad cases as "lumpy", whatever that means. Accuracy was reputed to drop off after as few as 100 rounds.

Now if the price is right and that stuff is accurate, I would gladly shoot it and clean between sessions. Think of it as a way to save money, spend a little more quality non-shooting time with your rifle, and have multiple chances to study your CCB zero as compared to your CDB zero...if there really is a difference.